Gas mixer



Jan. 1, 1935. c. w. PHII JP I ,986, 59

GAS MIXER Filed March 16, 1933 2 Sheets-Sheet l I I I INVENTOR. @MeLEs w. 8

Jan. 1, 1935.

c w. PHILIP GAS MIXER INVENTOR.

Patented Jan. I I

UNITED STATES PATENT OFFICE v ;1,986,15 9;"; s V

ons ivnxnn "GhaIlQS. Philip; San Francisco, Gali f assignor H to l hilip Manufacturing ,Gompany, Oakland, CaIif, a corporation :of California. appliestien Mater a s, 193 ,Srial No. 661,030- j ggzgoni s (o1. 148- -i3o i This inventionrelates' partieularly'toa liquid 'glg4 is aplan view or the "g'asifier showing the fuel gasifier for'internal eonibustionen ine's. interior tithe outer shell; U f 7 An object of the 'inventidnis' to rovide a l'lhe'finvention herein'd'es'cr'ibed is d'e's'i'ghed'pr'ie .liquid fuel 'g'asif'ying aevieebetween tne earbum rflrtwrr heat the as s or vapors of low 'retor an'd'th'e intake manifold or a conventional" grade hydrocarbon fuels and to make thesarn'e 5 internal combustion engine, to eonvertallgdi tne" e i 'wmbust'iblewhen d i v i na relatively heavy liquid fuel 'parti'ele'siinto gas so internal combustion engines. A 1 liquid fuels that the same will bereadilycofifi'bus'tible when mix'eclhieh a "low grade o e avityhiave c rtain carried into the engine cylinders. portions thereof which highly-volati e a 10- A further object of 'th'eiventibni's teem/me wni cii'are readiiynsable for 'oor'nbustionpurp'oses. 10 a liquid fuel 'gasifying' device through which the Higher-grade fuels promote combustion more gaseous mixture from engine carburetor readily than lower g'ra'defuels, and it is not necespasses to increase the combustibiiity of the said sa y to pr h at higher gravity fuels f 'c mbu mixture before entry theredi intof tne intake tion urposes. My invention is designed primanifold of the machine. The" highly Volatile marily to accomplish the breaking up of allow '15 portionsof th'e'lfuel will readily mix withit'h'e air gravity fuels 'of proper-character, intoeombusti= stream ifiowing into'the intakeman'ifdlil,"whereas blejgases-or vapors, to accomplish the 'same'effithe heavier and less voltatile'iooitioiis" of thefuel cient operation in usage that results from the use ofhlglierg'ravity fuels. 1

"in 'detailthe {construction illustrated inthe'20 drawings includesan internal combustion "engine designated bythehumeral l1; and having an in j tali'e manifold? connected with the respective Astill further object" 'f'the' inventionist 'pr engine eyIinders. aswell as an exhaust pipeB vid a iq u i W mated byIilea-ding frorn'fsai'dcylindrs. A carburetor 4-is 25 the exhaust gases 'o f 'the engine-,and'the-amnunt arranged adjacent t'he"intake manifold 2, and Of' e ha s gases; Pj E'PYf-D SE into him 1 between thefsai'd Carburetor and intake manifold, throu h the in d i i in 'if t 'e 'l h'at'eihti'posed my fuel ga s'ifying device '5. rati with h v u a o fl 'flr ltliathasses I The g'asifie'rhas its lower end secured to a through the'ga'sifi'er tothe eiiginecylinders. union/6 on the intake" manifold, while the upper Other objects and advantages 'alretopidvide "it end ,oith'e 'gasifier fi's bolted or otherwise secured liquid fuel 'gasifi'effo'r internal combustionento the underside of the carburetor '4. The carines that will be 'sup'eriorfin point 'ofsimfili'dity, buretor imayfbe of an of the well known ty es inexpensivene'ss' of construction; positiveness. of of; carburetors; and said carburetor has a butteropera a a ty d c nvenience infuse fly Valve 17 therein, which-regulates the amount a g fi m I of airwhich passes through the carburetor to In this specificationafid'the-anrieirddrawiilgs, 'carry the 'fuel vapors into the engine cylinders. the invention is illustrated in the form considered Thev-a lve '7 is manipulated through a connection 40 to be the best, but it {is to be'nndersteeaithat 8 tofither the hand or'foot accelerator-rod 8 the invention is not limitedto suchiorm, 'because of t e engine control. it maybe embodiedin other formsgand itgis also '-I h e gasifier -5 consists of an ovoid bod'y 9 t be understood t t .i d by-the. -,1a'im$- folwhich isgof larger diameter at'its upper end than lowing the description, it is desired to-cover the at t lower ends-v pp d o h -b dy 9 20 ture. 'My -gasi'fier subjects ffihe less yol llep tions of the fuel to a-lieet treatmentsotliat same will be readily combustible whenfih o'du ed; into the engine cylinders.

invention in whatsoeverformritmay:beembodied. is provided W fl face with cir m- 5 V In t cc p ying drawings; 7 I I ferentially spaced bolt holestherearound-for sei 1 r pr t a Side lev t n t r curing 'the'cover-or head 10 thereto. The lower combustion engine having sa li uid 1 1 'gasifym'g or bottom and Of'the body 9 is providedwith a vdevice arranged 'thereonabetween tth j flju g r circramferentiallji -shouldered 'porti'onll therein,"

and intake manifold. i g r Fig.' 2 is an enlarged vertical gseetion ta en of theinn'erfcasine la ia inner c" through a liquid fuel gasify'ing"device-constructed an anriular slioulder 13 at the bottein ther'eor in accordance with my invention. n which rests en the seat '1-1-,and a flange i l-at the" Fig. 3 is "a p lan view' takenthrol lg h on DW h o Whichfieg flush and in D' to form "seat for the exterior *of the base end :50

alignment with the upperend' of the bo'dy 9, and

and the inner casing. The outer edges of said webs or fins do not contact the inner face of theouter body. The body 9 is provided with an inlet port 17, at the upper end thereof, on one side of the bafile 15, to which a by-pass pipe 18 is bolted,

which pipe communicates with the exhaust manifold 3, and at its lower end the body 9 is pro-' vided with an outlet port 19 on the other ,SldQ."

of the baiiie '15, which outlet port 19 connects through a by-pass manifold 20 to the'exhaust pipe 3, see Fig. 4, A valve 21 is provided inthe exhaust pipe between the by-pass manifold18 and the return Icy-pass 20, and said valve is'op- 1 erated by a link 22 in synchronism with the fuel throttle 7.

In order to divert the exhaust gases of the ex haust pipe into the gasifier, the valve 21' is placed across the exhaust pipe 3,thus compelling the f gas therein to flow through the by-pass pipe 18 into and completely around the gasifier beforeit,

can discharge outwardly through the return bypass20 intothe exhaust manifoldB on the other sideof the control valve 21. 3

Where the engine operates at a relatively slow speed, I have found that 'a relatively higher proportion of exhaust gases should be passed through the manifold than when the engine is operating at higherspeeds. The upper side of the body 9 and casing 12is closed by a cover 10, the interior of which is provided with a'stream-line deflector 23 therein. The deflector 23 is arranged cen'- trally within the opening through the cover 10,

being supported therein by. spiral spiders or vanes 24.

The mixture of liquidfuelv and air from the carburetor 4 which enters the cover 10 is given a whirling impetus by the vanes 24 so that the heavier particles of liquid fuel 'will be thrown: outwardly into contact with the heated walls of u length. 'The' inner contour of the casing, includ the inner casing 12 to thereby vaporize said fuel particles and make the samereadily combustible.

The inner contour of the cover 10 and the case ing 12 is so designed with relation to the deflector 23 and vanes 24 that the air flow therethrough will reach a point of maximum efliciency, fand there will be no air pockets or dead spaces'which" would tend to decrease the act of, gasifying the fuel vapors. The diameter of the defiectorfas well as the length thereof, and the position which saiddeflector occupies in the cover and the casing,

, insures that all of the heavier'unvaporized portions of the fuel will be thrown into contact with the heated walls of the gasifier, and will be converted into a gaseous combustible mixture prior to entry into the intake manifold.

The valve 21 in the exhaust pipe3 is so positioned that at the commencement of the engine operation, and atsuch other periods of operation of the engine when the same is idling or running at slow speeds, that practically all of the exhaust gases from the engine will be passed through the double wall space of the gasifier, wherebythe maximum amount of heat will be conductedto the inner casing 12 thereof. As the engine speed would increase, thevalve 21 would automatically open with the throttle 7 to by-pass a smaller volume of the exhaust gases into the gasifier.

Both the carburetor butterfly valve '7 and the exhaust valve 21 operate simultaneously in relation to each other and in relation to the speed of operation of the engine, both valves being connected by the rods 8 and 22 to the accelerator pedal, not shown.

- My gasifier does :not heat the carbureted mixture of air and fuel in its entirety but heats only the heavier portions of the fuel thrown outward by centrifugal force. The air containing the higher volatile gases following centripetal lines passes into the engine cylinders in a relatively cool condition.'- The gasifier does not heat the fuel mixture to a point of hydrocarbon decomposition where the same would be broken down to form carbonand the heat; units in the fuel lowered. The central deflector tends to throw the heavier particles of liquid fuel into contact with the heated innenwall of the gasifier, whereby the same "are converted into taper, and proceed in the vapor form'intothe engine cylinders with the proper ,amount'ofair for efficient combustion, saidair being heated onlyto a degree to prevent condensation "of the fuel in the intake manifold, and'to, not reduce the volumetric efficiency' thereof.

' With my gasi'fierit is possible to use cheap and low grade liquid hydrocarbon fuels, and to obtain the samefeiflc'ient operation, of an engine as though higher gravity fuels were used. In using the lower g'ravitylfuels it is sometimes desirable to inject a small quantity of water to be carried by the .air and fuelmixture into and through mixture Jten sto eliminate'the knock or ping Y which somet mes occurs where low gravity fuels are us'edin operation.

The .int erior,of the casing 12, as well as the i-interiorgo'fithe body 9, has the shape of an ellipsojidor conoidj I havefound it desirable to make the iri terior of the casing circular on every horizontal plane throughout its length and elliptical on every vertical plane throughout its ing the cover and the lower portion thereof, is substantially egg-shaped on the vertical axis.

The deflector 23 is arranged co-axially within the casing and isof ellipsoid shape. The shape and position of thedefl'ecto'r is such in relation to the interior of the casing that it,,effects an increase.

in temperature of thecarbureted mixture of air .andfuel passing thru the caslng without dithrough the'casing. v Having thusdescribed this invention, what I claim and desire-to secure by Letters Patent is:

'1. In'a gas mixer for an engine which comprises an outer pot-like casing having an outlet port inits bottom for vapor, a cover fitting over said casing having an inlet port for a mixture of liquid fuel and; air,an open-top potspaced within the outer pot and seated at itsopposite ends respectively between the outer pot and said cover H and having a. port in its bottom matching said outlet port, said cover overhanging the space between the two pots and formed internally to substantially match and continue the inner walls of the inner pot in a converging manner to said inlet port, fins extending from said inner p'ot, means for circulating hot gas between said pots to cause heating of said fins and pot, spiral fanlike blades carried by said lid in the path of the incoming mixture of liquid fuel and air, and an ellipsoidal deflector supported centrally of said blades.

2. In a gas mixer for an engine which comprises an outer pot-like casing having an outlet port in its bottom for vapor, a cover fitting over said casing having an inlet port fora mixture of liquid fuel and air, an open-top inner pot spaced within the outer pot and seated at its opposite ends respectively between the outer pot and said cover and having a port in its bottom matching said outlet port, said cover overhanging the space between the two pots and formed internally to substantially match and continue the inner walls of the inner pot in a converging manner to said inlet port, fins extending from said inner pot, means for circulating hot gas between said pots to cause heating of said fins and pot, spiral fan-like blades carried by said lid in the path of the incoming mixture of liquid fuel and air, and a deflector supported centrally of said blades.

CHARLES W. PHILIP. 

